Explosive.



new and useful Im roveme'nts in Ex losives 1 tive to detonation) anddevelops much more v and thenput it (preferably with brushes).

I in rock.

' tion'of all the energy in the cheap initial mix- UNITED STATES- PATENTOFFICE.

1 Specification of Letters Patent.

' application filed November 13, 1907.

- Patented June '1, 1909. Serial No. 401,944.

, chlorate. N o approach to such proportions can be made successfulw1ththe usual meth- ,To all whom time?) cojz-cem;

Be it known that I, ERNEST A. LE D'UEUR,

' a citizen'of the Dominion of Canada", residing at Ottawa, in thecounty of Carleton and p corporate in the ordinary way sufficientProvince of Ontar o, Canada, have lnvented chlorate to make the mixtureof any service as an explosive would result in a treacherous compoundwhich would be placedon the prohibited list. 7 I

am aware that explosives have been compounded of nitrate of ammoniaproof -which-the following 1s a specification.

-My invntion consistsof an explosive which takes advantage of. the factwhich I have discovered that if a mixture of suitable such as crudepetroleum, petroleum jelly and I the like, and with chlorate of otashworked face of its grains asmall'quantity of'powdered into the mixture;and I am a chlorate of potash, the resultant material becomes completelyexplosive by detonation drocarbon mixed first with a'quantityof sa t- (te orlginal'mixture belng entirely insensipeter and. then with a(larger)v amount of chlorateof potash, but I am not aware of anexplosive ever having been prepared which anticipates myabove describedinvention. In the claims, saltpeter isunderstood to mean nitrate of sodaor potash. I claimi l 1. An explosive consisting ofgrains of a ower,cost for cost, than any explosive itherto roduced.

The f0 owing will describe themethod of preparation :Melt' about 12%lbs. of paraffin wax and'fadd about 11 lbs. of ground sulfur, and thenthoroughly mix i about 54 lbs. of ground nitrate of soda. uring mixingkeep the mass well loosened up with rakes or the like. Allow the mixtureto cool and stifien .drocarbonaceous material, coated with pow deredchlorate of potash. r 5

explosive consisting'of grains of a mixture containing saltpeter, sulfurand hydrocarbonaceous material, which latter is solid at ordinarytemperatures, coated with powdered chlorate of potash.

3. An explosive consisting of grains of a through a wlre screen ofconvenient sizev mesh, whereby the -mass. is ,comminuted.

hen mixin about 22% lbs. of 'owdered chlorate of potash, which forms-aight and porous coatmg on the particles of the 'pre-' vious mixture.This makes, as stated, a powerful as well as cheapexplosive, and retainsits porosity sufficiently for use inbulk I may even, especially forpouring loosely into rock seams and the like, still fur-- ther diminishthe chlorate and yet secure good detonating properties. In such work Iave even secured detonation, and the liberacoated with powderedchlorateof potash.

In testimony whereof I have signed my two subscribing witnesses.

Witnesses:

HELEN T. LE SUEUR,

ture, with one quarter the above addition of MAU'D S. LE'ISUEUR.

ods of m1xing,and, on the other hand, to inmixture containing saltpeter,sulfur and hyname to-this specification in the presence of.

ERNEST =A. LE SUEUR. I

tected with fluid or semi-fluid hydrocarbons o aware that an exploslvehas been made with a solid hlymixture containing saltpeter, sulfur andwax,

